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/*
* makeargv.c: parse string to argv[]
*
* $Id: makeargv.c,v 1.8 2016/07/27 09:10:44 tom Exp $
*/
#include <estruct.h>
#include <makeargv.h>
//--------------------------------------------------------------
int
option_has_param(const char *option)
{
static const char *table[] =
{
"-c",
#if OPT_ENCRYPT
"-k",
#endif
#if OPT_TAGS
#if DISP_X11 /* because -title is predefined */
"-T",
#else
"-t",
#endif
#endif
#if DISP_NTWIN
"-font",
"-fn",
"-geometry",
#endif
};
unsigned n;
int result = 0;
for (n = 0; n < TABLESIZE(table); ++n) {
if (!strcmp(option, table[n])) {
result = 1;
break;
}
}
return result;
}
int
after_options(int first, int argc, char **argv)
{
int result = first;
while (result < argc && argv[result] != 0 && is_option(argv[result]))
result += 1 + option_has_param(argv[result]);
return result;
}
int
is_option(const char *param)
{
return (*param == '-'
|| *param == '+'
|| *param == '@');
}
int
make_argv(const char *program,
const char *cmdline,
char ***argvp,
int *argcp,
char **argend)
{
int maxargs = 2 + ((int) strlen(cmdline) + 2) / 2;
char *blob;
char *ptr;
char **argv;
int argc = 0;
if ((blob = typeallocn(char, strlen(cmdline) + 1)) == 0)
return -1;
if ((argv = typeallocn(char *, maxargs)) == 0) {
free(blob);
return -1;
}
if (argend != 0)
*argend = 0;
strcpy(blob, cmdline);
if (program != 0)
argv[argc++] = (char *) program;
for (ptr = blob; *ptr != '\0';) {
char *dst;
char delim = ' ';
while (*ptr == ' ')
ptr++;
if (*ptr == SQUOTE
|| *ptr == DQUOTE
|| *ptr == ' ') {
delim = *ptr++;
}
/*
* Save the beginning of non-options in *argend
*/
if (argend != 0
&& *argend == 0
&& !is_option(ptr)) {
*argend = strdup(ptr);
}
argv[argc++] = dst = ptr;
if (argc + 1 >= maxargs) {
break;
}
while (*ptr != delim && *ptr != '\0') {
if (*ptr == '"') {
ptr++;
delim = (char) ((delim == ' ') ? '"' : ' ');
} else {
*dst++ = *ptr++;
}
}
if (*ptr == '"') {
++ptr;
}
if (dst != ptr) {
*dst = '\0';
} else if (*ptr == ' ') {
*ptr++ = '\0';
}
}
argv[argc] = 0;
*argvp = argv;
*argcp = argc;
return 0;
}
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